Spending an afternoon revisiting the magnificent archival library of "Attention, Kmart shoppers: Every Kmart store background tape ever from 1989-1993," uploaded October 2, 2015 to The Internet Archive by Archivist Jason Scott from the collection of Mark Davis (and others).
For those who missed this news eight years ago, Davis was a K-Mart employee throughout the 80s and 90s and salvaged all of the in-store Kmart MUZAK PA system cassettes and reel-to-reels from the trash, and in 2015 they were made available for the whole world to enjoy. These include elevator music style instrumental renditions of 80s soft rock hits and adverts for in-store specials and store promotions. This library is a vaporwave-lover's dream.
Here is a video of Mark showcasing his stockpile of cassettes:
https://youtu.be/8t5TYw2bkOk
And here is his YouTube upload of the earliest specimen from the archive - Kmart 1973 Reel to Reel. (The opening jingle on this one is priceless!)
youtube.com/watch?v=Ln_88HHXJ04
You can explore the entire library on The Internet Archive here:
https://archive.org/details/attentio...tab=collection